搜搜考试网英语翻译A machine consists of a number of machine elements.The m
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英语翻译
A machine consists of a number of machine elements.The most useful machine element in power transmission is the gear.The gear is virtually a wheel wist a number of teeth.Gears must work inpairs.A pair of gears with different number of teeth will increase or decrease the speed of rotation.
pulleys and belts are very common in power transmission.They can also change speeds on machine tools gears or pulleys rotate on shafts.The shaft must rest in bearings.somrtimes they may be couplings between shafts.we may use clutches to start or stop shalt motion.A machine consists of a number of machine elements.The most useful machine element in power transmission is the gear.The gear is virtually a wheel wist a number of teeth.Gears must work inpairs.A pair of gears with different number of teeth will increase or decrease the speed of rotation.
pulleys and belts are very common in power transmission.They can also change speeds on machine tools gears or pulleys rotate on shafts.The shaft must rest in bearings.somrtimes they may be couplings between shafts.we may use clutches to start or stop shalt motion.
A machine consists of a number of machine elements.The most useful machine element in power transmission is the gear.The gear is virtually a wheel wist a number of teeth.Gears must work inpairs.A pair of gears with different number of teeth will increase or decrease the speed of rotation.
pulleys and belts are very common in power transmission.They can also change speeds on machine tools gears or pulleys rotate on shafts.The shaft must rest in bearings.somrtimes they may be couplings between shafts.we may use clutches to start or stop shalt motion.A machine consists of a number of machine elements.The most useful machine element in power transmission is the gear.The gear is virtually a wheel wist a number of teeth.Gears must work inpairs.A pair of gears with different number of teeth will increase or decrease the speed of rotation.
pulleys and belts are very common in power transmission.They can also change speeds on machine tools gears or pulleys rotate on shafts.The shaft must rest in bearings.somrtimes they may be couplings between shafts.we may use clutches to start or stop shalt motion.
一部机器是有大量的机器零件组成的.在动力传送中最有用的机器零件时齿轮.齿轮实际上是一个有许多齿的轮子.齿轮必须成对工作.一对有不同数目的齿的齿轮会增加或减少旋转的速度.滑轮和传送带是非常常见的动力传输.他们也能够改变工作母机齿轮和轴上滑轮的速度.轴必须在轴承上.有时它们可能连接两个轴.我们也可以用离合器太启动或停止轴的动作.
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